5.4.6 Hop count exceeded - possible mail loop - Forest Migration

After you perform a cross forest mailbox move, the user is able to send emails, but cannot receive. You receive the following NDR.

Delivery has failed to these recipients or groups:
Bob Smith (bsmith@company.com)
A problem occurred during the delivery of this message. Please try to resend the message later. If the problem continues, contact your helpdesk.
The following organization rejected your message: mail.company.com.





Diagnostic information for administrators:
Generating server: exchangeserver.corp.dom
bsmith@company
mail.company.com #554 5.4.6 Hop count exceeded - possible mail loop ##


Resolution: Disable the mailbox and reconnect.


James Chong
MCITP | EA | EMA; MCSE | M+, S+
Security+, Project+, ITIL
msexchangetips.blogspot.com